This site is supported by donations to The OEIS Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A110013 Squares of the form 4p + 5, where p is a prime. 4
 25, 49, 81, 121, 169, 289, 361, 441, 529, 729, 961, 1089, 1521, 1681, 1849, 2401, 2809, 3249, 3721, 3969, 5041, 5929, 6241, 6889, 7921, 8281, 8649, 9409, 10201, 11449, 11881, 12321, 12769, 14161, 14641, 16641, 17161, 17689, 18769, 19881, 23409 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS The sequence contain all squares of greater of twin primes. LINKS FORMULA a(n) = 4*A002327(n) + 5 = A088502(n)^2. MATHEMATICA Select[4#+5&/@Prime[Range[900]], IntegerQ[Sqrt[#]]&]  [From Harvey P. Dale, Jan. 29, 2011] CROSSREFS Cf. A002327, A002328, A088502. Cf. A108604. Sequence in context: A018936 A212190 A110484 * A109861 A106564 A104777 Adjacent sequences:  A110010 A110011 A110012 * A110014 A110015 A110016 KEYWORD easy,nonn AUTHOR Giovanni Teofilatto, Sep 03 2005 EXTENSIONS Corrected and extended by Ray Chandler, Sep 04 2005 STATUS approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Transforms | Puzzles | Hot | Classics
Recent Additions | More pages | Superseeker | Maintained by The OEIS Foundation Inc.

Content is available under The OEIS End-User License Agreement .